Hello Linux Geeksters. As you may know, Cairo-Dock is a fast and light desktop interface that takes the shape of docks, docklets, panels, etc. The latest version available is Cairo-Dock 3.4, which has been recently released, coming with changes, coming with a better GUI, improved support for Compiz, better integration with dockbar and support for Wayland and EGL, among others.

In this article I will show you how to install Cairo-Dock 3.4 on Ubuntu 14.10 Utopic Unicorn, Ubuntu 14.04 Trusty Tahr, Ubuntu 12.04 Precise Pangolin, Linux Mint 17 Qiana, Linux Mint 13 Maya, Elementary OS 0.3 Freya, Elementary OS 0.2 Luna, Deepin 2014, Peppermint Five, LXLE 14.04, Linux Lite 2.0 and other Ubuntu derivative systems.
Because it is available via PPA, installing Cairo-Dock 3.4 on Ubuntu 14.10, Ubuntu 14.04, Ubuntu 12.04 and derivative systems is easy. All you have to do is add the ppa to your system, update the local repository index and install the cairo-dock and cairo-dock-plug-ins packages. Like this:
$ sudo add-apt-repository ppa:cairo-dock-team/ppa
$ sudo apt-get update
$ sudo apt-get install cairo-dock cairo-dock-plug-ins
Optional, to remove cairo-dock and cairo-dock-plug-ins, do:
$ sudo apt-get remove cairo-dock cairo-dock-plug-ins